/* =====================================================
   B.D. LIVINGSTON - AUTHOR WEBSITE
   Elegant, Professional, Timeless Design
   ===================================================== */

/* CSS Variables */
:root {
    /* Colors - Refined palette */
    --color-primary: #1a2639;          /* Deep navy - trust, wisdom */
    --color-secondary: #c9a227;        /* Warm gold - success, warmth */
    --color-accent: #d4af37;           /* Brighter gold for hover */
    --color-background: #faf9f7;       /* Warm off-white */
    --color-surface: #ffffff;          /* Pure white for cards */
    --color-text: #2d3436;             /* Dark gray for readability */
    --color-text-light: #636e72;       /* Lighter gray for secondary text */
    --color-border: #e8e6e1;           /* Subtle border color */
    
    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Raleway', 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(26, 38, 57, 0.08);
    --shadow-md: 0 4px 20px rgba(26, 38, 57, 0.12);
    --shadow-lg: 0 8px 40px rgba(26, 38, 57, 0.16);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.4rem, 3vw, 1.8rem); }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Section Label */
.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 2px solid transparent;
    border-radius: 0;
    cursor: pointer;
    transition: all var(--transition-medium);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-surface);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--color-primary);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-surface);
}

/* Text Link */
.text-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-secondary);
    padding-bottom: 2px;
}

.text-link:hover {
    color: var(--color-secondary);
}

.text-link svg {
    transition: transform var(--transition-fast);
}

.text-link:hover svg {
    transform: translateX(4px);
}

/* =====================================================
   NAVIGATION
   ===================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    padding: var(--spacing-sm) 0;
    transition: all var(--transition-medium);
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-surface);
    transition: color var(--transition-fast);
}

.navbar.scrolled .nav-logo {
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-link {
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-surface);
    position: relative;
    padding: 0.5rem 0;
}

.navbar.scrolled .nav-link {
    color: var(--color-text);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-secondary);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-surface);
    transition: all var(--transition-fast);
}

.navbar.scrolled .nav-toggle span {
    background-color: var(--color-primary);
}

/* =====================================================
   HERO SECTION
   ===================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #2d3a4f 100%);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-md);
    animation: fadeInUp 1s ease forwards;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.hero-title {
    color: var(--color-surface);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.hero-tagline {
    font-family: var(--font-heading);
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    font-style: italic;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-cta .btn-primary {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-primary);
}

.hero-cta .btn-primary:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.hero-cta .btn-secondary {
    color: var(--color-surface);
    border-color: var(--color-surface);
}

.hero-cta .btn-secondary:hover {
    background-color: var(--color-surface);
    color: var(--color-primary);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
    margin-top: 0.5rem;
    animation: scrollPulse 2s ease-in-out infinite;
}

/* =====================================================
   FEATURED BOOK SECTION
   ===================================================== */
.featured-book {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-surface);
}

.featured-book-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.book-image-wrapper {
    position: relative;
    perspective: 1000px;
}

.book-image {
    position: relative;
    transform: rotateY(-5deg);
    transition: transform var(--transition-medium);
}

.book-image-wrapper:hover .book-image {
    transform: rotateY(0deg);
}

.book-placeholder {
    aspect-ratio: 2/3;
    background: linear-gradient(135deg, var(--color-primary) 0%, #2d3a4f 100%);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(201, 162, 39, 0.3);
}

.book-title-preview {
    font-family: var(--font-heading);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 600;
    color: var(--color-secondary);
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

.book-subtitle-preview {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 0.05em;
}

.book-shadow {
    position: absolute;
    bottom: -20px;
    left: 10%;
    right: 10%;
    height: 20px;
    background: radial-gradient(ellipse at center, rgba(0,0,0,0.2) 0%, transparent 70%);
}

.book-details {
    padding: var(--spacing-md) 0;
}

.book-title {
    margin-bottom: 0.25rem;
}

.book-subtitle {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-style: italic;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.book-description {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.book-highlights {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.book-highlights li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.book-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: 700;
}

/* =====================================================
   QUOTE SECTION
   ===================================================== */
.quote-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

.featured-quote {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.featured-quote p {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-style: italic;
    font-weight: 400;
    color: var(--color-primary);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.featured-quote cite {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-style: normal;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
}

/* =====================================================
   MISSION SECTION
   ===================================================== */
.mission-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-surface);
}

.mission-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.mission-content h2 {
    margin-bottom: var(--spacing-md);
}

.mission-content p {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.mission-content .text-link {
    margin-top: var(--spacing-sm);
}

/* =====================================================
   NEWSLETTER SECTION
   ===================================================== */
.newsletter-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #2d3a4f 100%);
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-content h2 {
    color: var(--color-surface);
    margin-bottom: var(--spacing-sm);
}

.newsletter-content > p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-md);
}

.newsletter-form .form-group {
    display: flex;
    gap: 0;
    max-width: 450px;
    margin: 0 auto;
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: 1rem 1.25rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    border: 2px solid transparent;
    border-right: none;
    background-color: var(--color-surface);
    color: var(--color-text);
}

.newsletter-form input[type="email"]:focus {
    outline: none;
    border-color: var(--color-secondary);
}

.newsletter-form .btn {
    border-radius: 0;
    white-space: nowrap;
}

.form-note {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: var(--spacing-sm);
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    background-color: var(--color-primary);
    color: rgba(255, 255, 255, 0.8);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-surface);
}

.footer-brand p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 0.25rem;
    margin-bottom: 0;
}

.footer-nav {
    display: flex;
    gap: var(--spacing-md);
}

.footer-nav a {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-secondary);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

/* =====================================================
   ANIMATIONS
   ===================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scrollPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}

/* =====================================================
   PAGE SPECIFIC STYLES
   ===================================================== */

/* About Page Hero */
.page-hero {
    padding: calc(var(--spacing-xl) + 80px) 0 var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, #2d3a4f 100%);
    text-align: center;
}

.page-hero h1 {
    color: var(--color-surface);
    margin-bottom: var(--spacing-sm);
}

.page-hero p {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-style: italic;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto;
}

/* Content Section */
.content-section {
    padding: var(--spacing-xl) 0;
}

.content-section.alt {
    background-color: var(--color-surface);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.content-grid.reverse {
    direction: rtl;
}

.content-grid.reverse > * {
    direction: ltr;
}

.content-text h2 {
    margin-bottom: var(--spacing-md);
}

.content-text p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.author-image-placeholder {
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, #e8e6e1 0%, #d4d1ca 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-size: 0.9rem;
    text-align: center;
    padding: var(--spacing-md);
}

/* Author Portrait Image */
.author-image {
    position: relative;
}

.author-portrait {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-medium);
}

.author-portrait:hover {
    transform: scale(1.02);
}

/* Philosophy Quote Block */
.philosophy-quote {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2d3a4f 100%);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    border-radius: 4px;
}

.philosophy-quote blockquote {
    text-align: center;
}

.philosophy-quote blockquote p {
    font-family: var(--font-heading);
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-style: italic;
    font-weight: 400;
    color: var(--color-surface);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.philosophy-quote blockquote cite {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-style: normal;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
}

/* Books Grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.book-card {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-medium);
}

.book-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.book-card-image {
    aspect-ratio: 2/3;
    background: linear-gradient(135deg, var(--color-primary) 0%, #2d3a4f 100%);
    margin-bottom: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-sm);
}

.book-card h3 {
    margin-bottom: 0.5rem;
}

.book-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

/* Contact Form */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-info h2 {
    margin-bottom: var(--spacing-md);
}

.contact-info p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.contact-details {
    margin-top: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.contact-item svg {
    color: var(--color-secondary);
}

.contact-form {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.contact-form h3 {
    margin-bottom: var(--spacing-md);
}

.form-row {
    margin-bottom: var(--spacing-sm);
}

.form-row label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.form-row input,
.form-row textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    border: 1px solid var(--color-border);
    background-color: var(--color-background);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
}

.form-row input:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
}

.form-row textarea {
    min-height: 150px;
    resize: vertical;
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */
@media (max-width: 992px) {
    .featured-book-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .book-image-wrapper {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .book-image {
        transform: none;
    }
    
    .book-highlights {
        text-align: left;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .content-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid.reverse {
        direction: ltr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-primary);
        flex-direction: column;
        padding: 100px var(--spacing-md) var(--spacing-md);
        transition: right var(--transition-medium);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu .nav-link {
        color: var(--color-surface);
        font-size: 1rem;
        padding: var(--spacing-sm) 0;
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .newsletter-form .form-group {
        flex-direction: column;
    }
    
    .newsletter-form input[type="email"] {
        border-right: 2px solid transparent;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.85rem;
    }
}